(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 4 of 4

Thread: Transformer

  1. #1
    DIY Junior Member g4s's Avatar
    Join Date
    May 2010
    Location
    ohio
    Posts
    1

    Default Transformer

    I installed a new thermostat last night without turning the power off, and i have read that doing so may cause the transformer to short out. How do i tell where the transformer is and if that is the problem?

  2. #2
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    Location
    New England
    Posts
    21,388

    Default

    If you have a multimeter, it should be fairly easy. If I remember properly, measure between the red and white wires...if you have 22-30vac, it should be fine.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  3. #3
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Location
    Cave Creek, Arizona
    Posts
    25,624

    Default

    You would only damage the transformer if you shorted the lines while installing the new thermostat. Just touching two or more wires together would NOT necessarily short out the transformer unless it was the "wrong" two wires. Even then it would normally only happen if the transformer had an internal, or external, fuse. You probably have a miswired thermostat if it is not working.

  4. #4
    Plumber jimbo's Avatar
    Join Date
    Aug 2004
    Location
    San Diego
    Posts
    9,001

    Default

    As to WHERE it is, if you have a forced air unit, air handler, or gas furnace, the transformer is inside that unit.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •